CN108706600A - A kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate - Google Patents
A kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate Download PDFInfo
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- CN108706600A CN108706600A CN201810635478.XA CN201810635478A CN108706600A CN 108706600 A CN108706600 A CN 108706600A CN 201810635478 A CN201810635478 A CN 201810635478A CN 108706600 A CN108706600 A CN 108706600A
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Abstract
The invention discloses a kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate, it is characterized in that, it is starting reaction raw materials with the cheap industrial chemicals such as waterglass, aluminium salt, magnesium salts, generate aqueous precursor gel under alkaline condition first, then calcination process is carried out, the excellent nanometer aluminium-magnesium silicate of thickening properties is obtained, aqueous auxiliary rheological agents is can be used as and is widely used in the water-based systems industry such as cosmetics, medicine, food.
Description
Technical field
The present invention relates to smectite race mineral to synthesize field, and in particular to a kind of high thixotropic, high thickening capacity, high viscosity
Nanometer aluminium-magnesium silicate solid phase synthesis process.
Background technology
Bentonite（Bentonite）Be one kind with montmorillonite（Montmorillonite）For the non-gold of main mineral constituent
Belong to mineral products, and the scientific name of montmorillonite is called aluminium-magnesium silicate.Although bentonite resource is very abundant in nature, since association is non-
Clay minerals are extremely more（Mainly there are quartz, white feldspar, calcite etc.）, so refined with existing extraction refining techniques
High-purity montmorillonite concentrate still impure aluminium-magnesium silicate, the mixture of aluminium-magnesium silicate and a small amount of impurity.In fact,
Due to the difference of minerogenetic conditions（Such as in the maturing process of mine, different location ore body touches the different heat etching of ingredient
Liquid）, there is in high-purity montmorillonite concentrate quite a few aluminium-magnesium silicate there is no full maturity mineralising, property viscous between expansiveness
Between soil and non-clay impurity.
Therefore, not only batch is inhomogenous for the aluminium-magnesium silicate extracted from bentonite ore, the aluminium-magnesium silicate of different mineral resources
Performance difference it is very big, and its hydrating capacity is generally undesirable, only can exceed that more than ten times of original volume after generally expanding in water,
Its stratiform lamellar structure is difficult to fully delaminate, and leads to not be sufficiently formed " card house " formula gel structure, to fundamentally
The thickening capabilities for having seriously affected aluminium-magnesium silicate, cause its industries such as cosmetics, detergent, coating, food application by
Larger obstruction.
In order to obtain the high-purity aluminium-magnesium silicate of batch stable homogeneous, only pass through artificial synthesized method at present.The U.S.
The offshore companies such as Elementis Specialties, U.S. ACMOL, Germany S ü d-Chemie AG pass through high temperature hydrothermal synthesis
Method prepares aluminium-magnesium silicate.But there are many critical defects for the artificial synthesis of this Ji Jia offshore company：Not only produce work
Skill is complicated, low production efficiency, and washing process needs to consume great lot of water resources, and especially production safety risk is big（Because of water
Hot temperature is high）.Therefore, how safe efficient production high thickening capacity aluminium-magnesium silicate be current relevant industries both at home and abroad urgently
The key technology difficulty that need to be overcome.
Invention content
It is an object of the invention to overcome the defect of the above-mentioned prior art, a kind of high thickening capacity efficiently, safe is provided
The synthetic method of aluminium-magnesium silicate.The synthetic method passes through height using the cheap industrial chemicals such as waterglass, aluminium salt, magnesium salts as reactant
Warm liquid process, production obtain the nanometer aluminium-magnesium silicate that thixotropy is strong, viscosity is big, thickening properties are excellent.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate, it is characterised in that：By following masses number
Raw material components are prepared in accordance with the following steps：
（1）5 ~ 10 parts of rare-earth substances are added in 500 parts of pure water and are sufficiently stirred first, 100 ~ 200 parts of waterglass are then added,
It is slowly dropped into the sodium hydroxide solution that 10 ~ 30 parts of mass fractions are 1 ~ 5% again, control time for adding is 10 ~ 30min；
（2）Secondly 1 ~ 5 part of soluble trivalent iron salt and 100 ~ 200 parts of aluminum soluble salts are added in 500 parts of pure water and are fully stirred
It mixes, then is slowly dropped into the sodium hydroxide solution that 10 ~ 30 parts of mass fractions are 1 ~ 5%, control time for adding is 10 ~ 30min；
（3）Then by step（1）Solution and step（2）Solution mixes and is warming up to 30 ~ 50 DEG C, adds 5 ~ 10 parts of soluble magnesiums
Salt and 0.5 ~ 1.5 part of soluble zinc salt, and continue 10 ~ 30min of insulated and stirred；Then reaction system is roasted at 150 ~ 200 DEG C
1 ~ 3h is burnt, room temperature discharging is finally down to, obtains a nanometer aluminium-magnesium silicate.
In the present invention, the rare-earth substance is Ce (NO3)3、Ce2(SO4)3、Dy(NO3)3、Dy2(SO4)3、Sr(NO3)2、
SrSO4One or more of arbitrary combination；The modulus of the waterglass is 3.0 ~ 3.3.Under alkaline condition, Ce (NO3)3
Equal rare-earth substances participate in waterglass and generate SiO2The process of gel.In final high temperature solid phase roasting process, Ce3+Equal rare earth ions
Replace part Si4+, guide the tetrahedral formation of Si-O.In the technical solution of the present invention, rare-earth substance is key core raw material.Such as
Fruit does not have Ce3+Equal rare earth ions, SiO2Gel finally can be only generated indefiniteness gel, can not form Si-O tetrahedrons.It is generated
Rare earth ion/Si-O tetrahedrons be the layer structure generated template, the step of being key core.Only in this template
On, Al-O octahedrons are just gradually accumulated, are shaped, and could form layer structure during high temperature solid state reaction.
In the present invention, the soluble trivalent iron salt is that one or more of ferric sulfate, ferric nitrate, ammonium ferric sulfate are appointed
Meaning combination；The aluminum soluble salt is the arbitrary combination of one or both of aluminum sulfate, aluminum nitrate.In soluble trivalent iron salt
Fe3+With aluminum soluble salt Al3+Co-precipitation, gradually forms Fe under alkaline condition2O3/Al2O3It is cogelled, then in solid phase high temperature
Stage gradually generates Fe/Al-O octahedrons.In the technical solution of the present invention, Fe3+There are most important；If without Fe3+,
Al is can be only generated in solid phase high-temperature reaction process2O3, and Al-O octahedral structures can not be formed.
In the present invention, the soluble magnesium salt is the arbitrary combination of one or both of magnesium sulfate, magnesium nitrate；Described
Soluble zinc salt is the arbitrary combination of one or both of zinc sulfate, zinc nitrate.Mg in soluble magnesium salt2+In soluble zinc salt
Zn2+Enter jointly and replace part Al and Fe in Fe/Al-O octahedrons, to form strong short of electricity minor structure.In the technology of the present invention side
In case, Zn2+Presence be also most important；If Zn is not present in reaction system2+, soluble magnesium salt is only used, only individually
Existing Mg2+The Al and Fe in octahedron can not be replaced.
Before high temperature solid state reaction, temperature of reaction system control is 30 ~ 50 DEG C, step（1）Solution, step（2）Solution, can
Soluble zinc salt and soluble magnesium salt hybrid reaction obtain aqueous precursor gel.If being less than 30 DEG C, precursors gel structure
Immature, solid phase reaction process layer structure does not have complete aging；If being higher than 50 DEG C, aqueous precursor gel structural instability.It is high
When temperature roasting, controlled at 150 ~ 200 DEG C.Temperature is less than 150 DEG C, and layer structure is immature；Temperature is higher than 200 DEG C, can only
Generate non-laminar indefiniteness nanostructure.
Different from conventional aluminium-magnesium silicate（Upper layer and lower layer is Si-O tetrahedrons, part Al in the Al-O octahedrons folded by centre3+
By Mg2+Replaced）, the present invention prepared by aluminium-magnesium silicate structure in, part Si in one side Si-O tetrahedrons4+By Ce3+Etc. dilute
Native ion is replaced；On the other hand, in Al-O octahedrons part Al by Fe3+、Zn2+And Mg2+Replaced.These two aspects takes
In generation, brings up aluminium-magnesium silicate electronegativity structure more stronger than raw ore, therefore its thickening capabilities and thixotropy are excellent more than raw ore.With
The prior art is compared, the beneficial effects of the invention are as follows：
（1）Not only product purity is high for prepared aluminium-magnesium silicate, batch stable uniform, and thixotropy is strong, and viscosity is big, thickens energy
Power is high, can be widely used as the auxiliary rheological agents of the water-based systems such as cosmetics, detergent, food, drug, coating；
（2）The technology of the present invention abandons high-temperature water thermal reaction process, i.e. high temperature and pressure risk is not present in reaction process, to thoroughly carry
High safe operation.
（3）Technical solution of the present invention need not be filtered and be washed, and a large amount of water resource, pole have been saved in no effluent sewage discharge
The earth alleviates current Environmental Protection in China pressure.
Specific implementation mode
With reference to specific embodiment, invention is further described in detail.
Embodiment 1
A kind of aqueous auxiliary rheological agents are prepared with nanometer aluminium-magnesium silicate by the raw material components of following masses number in accordance with the following steps：
（1）First by 5 parts of Ce (NO3)3It is added in 500 parts of pure water and is sufficiently stirred, 100 parts of waterglass are then added（Modulus is
3.0）, then it is slowly dropped into the sodium hydroxide solution that 10 parts of mass fractions are 1%, control time for adding is 10min；
（2）Secondly 1 part of ferric sulfate and 100 parts of aluminum sulfate are added in 500 parts of pure water and are sufficiently stirred, then be slowly dropped into 10 parts of matter
The sodium hydroxide solution that score is 1% is measured, control time for adding is 10min；
（3）Then by step（1）Solution and step（2）Solution mixes and is warming up to 30 DEG C, adds 5 parts of magnesium sulfate and 0.5 part
Zinc nitrate, and continue insulated and stirred 10min；Then reaction system at 150 DEG C is roasted into 1h, is finally down to room temperature discharging, i.e.,
Nanometer aluminium-magnesium silicate a is made.
Embodiment 2
A kind of aqueous auxiliary rheological agents are prepared with nanometer aluminium-magnesium silicate by the raw material components of following masses number in accordance with the following steps：
（1）First by 5 parts of Ce2(SO4)3With 5 parts of Dy (NO3)3It is added in 500 parts of pure water and is sufficiently stirred, be then added 200 parts
Waterglass（Modulus is 3.3）, then it is slowly dropped into the sodium hydroxide solution that 30 parts of mass fractions are 5%, control time for adding is
30min；
（2）Secondly 2 parts of ferric nitrates, 3 parts of ammonium ferric sulfates, 100 parts of aluminum nitrates, 100 parts of aluminum sulfate are added in 500 parts of pure water and are filled
Divide stirring, then be slowly dropped into the sodium hydroxide solution that 30 parts of mass fractions are 5%, control time for adding is 30min；
（3）Then by step（1）Solution and step（2）Solution mixes and is warming up to 50 DEG C, adds 5 parts of magnesium sulfate, 5 parts of nitric acid
Magnesium, 0.5 part of zinc sulfate, 1 part of zinc nitrate, and continue insulated and stirred 30min；Then reaction system is roasted into 3h at 200 DEG C, most
After be down to room temperature discharging, obtain a nanometer aluminium-magnesium silicate b.
Embodiment 3
A kind of aqueous auxiliary rheological agents are prepared with nanometer aluminium-magnesium silicate by the raw material components of following masses number in accordance with the following steps：
（1）First by 3 parts of Ce (NO3)3, 3 parts of Dy2(SO4)3, 3 parts of Sr (NO3)2It is added in 500 parts of pure water and is sufficiently stirred, then
150 parts of waterglass are added（Modulus is 3.1）, then it is slowly dropped into the sodium hydroxide solution that 15 parts of mass fractions are 2%, control is added dropwise
Time is 20min；
（2）Secondly by 1 part of ferric sulfate, 1 part of ferric nitrate, 1 part of ammonium ferric sulfate, 60 parts of aluminum sulfate, 70 parts of aluminum nitrates be added to 500 parts it is pure
It in water and is sufficiently stirred, then is slowly dropped into the sodium hydroxide solution that 20 parts of mass fractions are 3%, control time for adding is 15min；
（3）Then by step（1）Solution and step（2）Solution mixes and is warming up to 40 DEG C, adds 3 parts of magnesium sulfate, 3 parts of nitric acid
Magnesium, 0.5 part of zinc sulfate, 0.5 part of zinc nitrate, and continue insulated and stirred 20min；Then reaction system is roasted into 2h at 170 DEG C,
It is finally down to room temperature discharging, obtains a nanometer aluminium-magnesium silicate c.
Embodiment 4
A kind of aqueous auxiliary rheological agents are prepared with nanometer aluminium-magnesium silicate by the raw material components of following masses number in accordance with the following steps：
（1）First by 1.5 parts of Ce2(SO4)3, 1.5 parts of Dy (NO3)3, 1 part of Sr (NO3)2, 2 parts of SrSO4It is added in 500 parts of pure water simultaneously
It is sufficiently stirred, 170 parts of waterglass is then added（Modulus is 3.2）, then it is slowly dropped into the sodium hydroxide that 25 parts of mass fractions are 4%
Solution, control time for adding are 25min；
（2）Secondly 2 parts of ferric sulfate, 1 part of ferric nitrate, 1.5 parts of ammonium ferric sulfates, 75 parts of aluminum sulfate, 85 parts of aluminum nitrates are added to 500 parts
It in pure water and is sufficiently stirred, then is slowly dropped into the sodium hydroxide solution that 15 parts of mass fractions are 2%, control time for adding is
20min；
（3）Then by step（1）Solution and step（2）Solution mixes and is warming up to 35 DEG C, adds 4 parts of magnesium sulfate, 4 parts of nitric acid
Magnesium, 0.5 part of zinc sulfate, 0.7 part of zinc nitrate, and continue insulated and stirred 25min；Then reaction system is roasted at 190 DEG C
2.5h is finally down to room temperature discharging, obtains a nanometer aluminium-magnesium silicate d.
By prepared nanometer aluminium-magnesium silicate a~d and external imported product（Bentone MH, U.S. Elementis
Specialties；Bengel-35, U.S. ACMOL；Optgel-1, German S ü d-Chemie AG）It is made into deionized water and is contained admittedly
Amount is 5% solution, stands 1h after high-speed stirred 30min under 3000rpm, then carries out dependence test, the results are shown in table below.
Table contrast test data
By contrast test data it is found that taking the viscosity of the aluminium-magnesium silicate of technical solution of the present invention preparation in water high, thixotropy
By force, thickening capabilities are excellent, the similar commodity of the far super external import of performance indicator.Therefore, prepared by technical solution of the present invention
Aluminium-magnesium silicate can directly be widely used in the industries such as cosmetics, coating, medicine, food as excellent aqueous auxiliary rheological agents
In.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Belong to those skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in all are answered
It is included within the scope of the present invention.
Claims (7)
1. a kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate, it is characterised in that：By following masses number
Raw material components prepare in accordance with the following steps：
（1）5 ~ 10 parts of rare-earth substances are added in 500 parts of pure water and are sufficiently stirred first, 100 ~ 200 parts of waterglass are then added,
It is slowly dropped into the sodium hydroxide solution that 10 ~ 30 parts of mass fractions are 1 ~ 5% again, control time for adding is 10 ~ 30min；
（2）Secondly 1 ~ 5 part of soluble trivalent iron salt and 100 ~ 200 parts of aluminum soluble salts are added in 500 parts of pure water and are fully stirred
It mixes, then is slowly dropped into the sodium hydroxide solution that 10 ~ 30 parts of mass fractions are 1 ~ 5%, control time for adding is 10 ~ 30min；
（3）Then by step（1）Solution and step（2）Solution mixes and is warming up to 30 ~ 50 DEG C, adds 5 ~ 10 parts of soluble magnesiums
Salt and 0.5 ~ 1.5 part of soluble zinc salt, and continue 10 ~ 30min of insulated and stirred；Then reaction system is roasted at 150 ~ 200 DEG C
1 ~ 3h is burnt, room temperature discharging is finally down to, obtains a nanometer aluminium-magnesium silicate.
2. a kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate as described in claim 1, feature exist
In：The rare-earth substance is Ce (NO3)3、Ce2(SO4)3、Dy(NO3)3、Dy2(SO4)3、Sr(NO3)2、SrSO4In one kind or
Several arbitrary combinations.
3. a kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate as described in claim 1, feature exist
In：The modulus of the waterglass is 3.0 ~ 3.3.
4. a kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate as described in claim 1, feature exist
In：The soluble trivalent iron salt is the arbitrary combination of one or more of ferric sulfate, ferric nitrate, ammonium ferric sulfate.
5. a kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate as described in claim 1, feature exist
In：The aluminum soluble salt is the arbitrary combination of one or both of aluminum sulfate, aluminum nitrate.
6. a kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate as described in claim 1, feature exist
In：The soluble magnesium salt is the arbitrary combination of one or both of magnesium sulfate, magnesium nitrate.
7. a kind of solid phase synthesis process of aqueous auxiliary rheological agents nanometer aluminium-magnesium silicate as described in claim 1, feature exist
In：The soluble zinc salt is the arbitrary combination of one or both of zinc sulfate, zinc nitrate.
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| CN109721040A (en) * | 2019-03-07 | 2019-05-07 | 中山职业技术学院 | A kind of preparation method of high-performance biomedicine type alpha tricalcium phosphate |
| CN109908399A (en) * | 2019-03-07 | 2019-06-21 | 中山职业技术学院 | A kind of preparation method of high-performance biomedicine four calcium 3D printing material of modified phosphate |
| CN110591442A (en) * | 2019-09-12 | 2019-12-20 | 浙江工业大学之江学院 | Preparation method of water-based thickening agent |
| CN110697888A (en) * | 2019-10-12 | 2020-01-17 | 北京恩菲环保股份有限公司 | Sulfur preparation and method for removing nitrate nitrogen in water |
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